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[dino99 <1162568@xxxxxxxxxxxxxxxxxx>]

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** Changed in: nvidia-graphics-drivers (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1162568

Title:
  Whole system suddenly became ALMOST unresponsive, massive disk
  crunching, Ctrl+Alt+F1 finally fixed that

Status in nvidia-graphics-drivers package in Ubuntu:
  Invalid

Bug description:
  I have no idea what package to report this agains, and whatever
  process triggered this, it is a system-level issue.

  I was happily writing in gedit, with a bunch of other programs open
  (Google Chrome, Thunderbird, Update Manager which I believe had
  already finisded updating hours earlier, a couple of Terminals...)

  Suddenly the hard disk started crunching and the whole system became "almost unresponsive", meaning that:
  - most keystroke got lost (yes, lost, not delayed)
  - mouse cursor movements became _very_ jerky
  - most mouse clicks got lost

  CPU usage was not especially high (I know it because of the fan speed
  which I notice because it makes noise)

  Since the system didn't respond to keystrokes, it was practically
  impossible to Alt-Tab to a terminal where I would have been able to
  run "top" and figure out maybe some process to kill

  Finally, by hitting Ctlr+Alt+F1 several times, the keystrokes finally
  got through and I could switch to a virtual terminal, and at that very
  instant the disk crunching ended. I ran top but there was already no
  process with high cpu activity. I switched back to the normal screen
  with Ctrl+Alt+F7 and everything was back to normal !!!!!!!!!

  I guess it was some process that suddenly started using much memory
  which may have lead to massive swapping, though this is only a
  hypothesis. I suspected of UpdateManager, which was open, but I think
  it was already done updating much earlier. Another suspect is
  Thunderbird.

  Anywas such a thing shoud NEVER happen. There are at least two system-level wrong things here:
  - Keyboard and mouse input and the UI in general must always have the greatest priority and never loose responsiveness.
  - Even in the rare cases where responsiveness of keyboard and mouse should become low and this couldn't be avoided, keystrokes hould be buffered, not lost. Actually that's what usually happens in most cases, but not this one.

  The fact that merely switching to the virtual terminal made the issue
  go away is very puzzling. Or maybe it was just a coincidence and it
  was when the stalling high activity (of whatever process) ended that
  finally I was able to switch to the terminal. Seems a big coincidence
  though.

  And whatever program triggered this (i.e. started high disk activity, whether it was directly or as a consequence of high ram usage) it should do it in the background, since I didn't explicitly launch it.
  IF it was Update Manager, it should run in the background. If it already does, then the concept of "background" needs to be better implemented in Ubuntu.

  It simply can't happen that the system suddenly becomes unstable and
  you can neither save your work nor go have a look at what's happening.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
  Uname: Linux 3.5.0-26-generic i686
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86 Kernel Module  304.43  Sun Aug 19 20:20:21 PDT 2012
   GCC version:  gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: i386
  CompizPlugins: [core,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,commands,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  Date: Sun Mar 31 21:41:20 2013
  DistUpgraded: 2013-01-13 11:55:33,566 DEBUG enabling apt cron job
  DistroCodename: quantal
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   NVIDIA Corporation G84 [GeForce 9500M GS] [10de:0405] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Device [1043:15d2]
  InstallationDate: Installed on 2010-06-23 (1012 days ago)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  MachineType: ASUSTeK Computer Inc. M51Sn
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=173acbf5-26a0-49e3-8d2b-f1c142582cbf ro quiet splash
  SourcePackage: xorg
  UpgradeStatus: Upgraded to quantal on 2013-01-13 (77 days ago)
  dmi.bios.date: 12/24/2007
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 303
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: M51Sn
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr303:bd12/24/2007:svnASUSTeKComputerInc.:pnM51Sn:pvr1.0:rvnASUSTeKComputerInc.:rnM51Sn:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: M51Sn
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.
  version.compiz: compiz 1:0.9.8.6-0ubuntu1
  version.libdrm2: libdrm2 2.4.39-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu0.1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

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